Mitsubishi Heavy Industries Limited

Mitsubishi Hitachi Power Systems, Ltd.

Atsuhiko Kanebako

Keita Takamura

Kouichi Akagi

Shinya Uchida

Yasuhiro Ojiro

Shinichi Yamazaki

Mitsuhiro Morishita

Takashi Shiraiwa

Rei Ikeda

Takefumi Takahashi

The present application relates to a fuel supply device for a gas turbine, which can supply a first fuel and a second fuel having a high combustion speed to a combustor of the gas turbine. In the present device, a first fuel supply line and a second fuel supply line are merged at a merging portion and are connected to the combustor via a mixing line. The second fuel supply line is provided with a first shutoff valve serving as a controlled object when the combustion state is switched from a single fuel combustion state to a mixed fuel combustion state, and a flow meter provided upstream of the first shutoff valve. The flow meter can output a detection value of a flow rate of the second fuel in order to calculate a mixing ratio of the first fuel and the second fuel for monitoring an operating state of the gas turbine.

Fuel supply device for gas turbine and method for controlling fuel supply device for gas turbine

An intake-air cooling device is disposed on a rear-stage side of a pre-filter disposed on an intake-air inlet side of an intake-air duct for guiding intake air taken in from an intake-air inlet to a compressor, for cooling the intake air by spraying water to the intake air. The intake-air cooling device includes a plurality of nozzles configured to spray the water to the intake air, a plurality of water conduit pipes including the plurality of nozzles arranged in an axial direction of the plurality of water conduit pipes, and a plurality of supply pumps configured to supply the water to a corresponding one of the plurality of water conduit pipes. Each of the plurality of water conduit pipes is an endless member which has a different perimeter.

Intake-air cooling device

Such a rotating blade body is supplied as can prevent not only local wear and deformation but also inadvertent vibration and can maintain cooling efficiency. A rotating blade body consists of a rotor discand rotating bladeswhich are assembled so as to extend from the outer circumference of the rotor discin a radial pattern, wherein blade root portionsof the rotating bladesare engaged into blade grooveswhich are formed along a direction of a rotating shaft on an edge of the outer circumference of the rotor discCirculation spacesfor the cooling air are formed along the direction of a rotating shaft between the bottom-end portionsof the blade root portionsand the bottom portionsof the blade grooves. Pushing-up memberswhich push up the rotating bladesoutward in a radial direction are inserted into the circulation spaces, maintaining circulation of the cooling air.

Rotating blade body and rotary machine using rotating blade body

Growing community of inventors

Tokyo, Japan

Atsuhiko Kanebako